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6P41s vs 7868
6P41s vs 7868
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Old 9th February 2018, 06:26 AM   #11
huggygood is offline huggygood  France
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because the 7868 are endangered so much pass on the 7591 which is more common
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Old 9th February 2018, 07:11 AM   #12
Eli Duttman is offline Eli Duttman  United States
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Yes, OS 7868s are very scarce. However, (repeat) New Sensor is currently producing 7868s.

Find an EU dealer that carries New Sensor's product. You should not have to pay the price New Sensor shows. The "blurb" that follows below is taken from the site of excellent U.S. dealer Jim McShane.

Quote:
7868 Electro Harmonix, same size bottles as NOS, great to have new production tubes! $29.50 ea., $59.50/pair,
$119.50/quad. Properly matched by me personally at 425 volts, not just "distributor" matched! Note - the pins on the
EH tubes are larger than old stock, and require very careful installation. After the first time they are installed
it's much easier to do.
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Old 9th February 2018, 07:32 AM   #13
huggygood is offline huggygood  France
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why persist in wanting to keep the 7868 while the 7591 is exactly the same with a different broaching.
the 7868 will not be manufactured long, it has only to see the number of adapter sold on the net to convert magnoval support in octal .deja on the hitone, in the 60 ", he had changed the 7868 for the 7591 and I do not think it's the only ones who did it.
to finish, actually I find EH in Europe, but twice the price of usa ...
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Old 9th February 2018, 09:34 AM   #14
Kay Pirinha is offline Kay Pirinha  Germany
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Quote:
7868 Electro Harmonix, same size bottles as NOS, great to have new production tubes! $29.50 ea., $59.50/pair,
$119.50/quad. Properly matched by me personally at 425 volts, not just "distributor" matched! Note - the pins on the
EH tubes are larger than old stock, and require very careful installation. After the first time they are installed
it's much easier to do.

In other words: These EH 7868 are Magnovals rather than Novars?
Best regards!
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Old 9th February 2018, 09:53 AM   #15
Eli Duttman is offline Eli Duttman  United States
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Quote:
In other words: These EH 7868 are Magnovals rather than Novars?
That's correct. I suspect that New Sensor could not conveniently source Novar bases, but Magnoval bases were available. The pin circle is the same, but Magnoval pins are bigger than Novar pins. Given the "tired" state of many units' sockets, the fatter pins can be a blessing. Be warned that once current production 7868s are used, going back to OS tubes, without replacing sockets, is not an option. Given the very, very, poor availability of OS 7868s, the socket issue is theoretical, not practical.

Quote:
why persist in wanting to keep the 7868 while the 7591 is exactly the same with a different broaching.
New Sensor will make the tubes, as long as a market exits. There are some units where installing Octal sockets and 7591s will not work, due to space considerations. Profit is a very powerful motive.
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Old 9th February 2018, 10:36 AM   #16
huggygood is offline huggygood  France
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@ Eli: one point
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Old 9th February 2018, 04:26 PM   #17
wrenchone is offline wrenchone  United States
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Well, the EH 7868s really require a magnoval socket. At least, with the 7591A, you have 3 choices for vendors, and they aren't choosy regarding sockets. I've been getting good results with the EH parts. I intend to try the 6P41s some time to see what I can squeeze out of them. Too bad the documentation on that tube is so poor.
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Old 9th February 2018, 04:27 PM   #18
Kay Pirinha is offline Kay Pirinha  Germany
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Are there available any datasheets for these 6P41S? Frank doesn't appear to have them handy...
Best regards!
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Old 9th February 2018, 04:28 PM   #19
wrenchone is offline wrenchone  United States
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The best I have seen are some sketchy specs from some of the vendors that sell them.
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Old 9th February 2018, 04:41 PM   #20
huggygood is offline huggygood  France
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Quote:
Originally Posted by Kay Pirinha View Post
Are there available any datasheets for these 6P41S?
Best regards!
http://forum.elektor.com/download/file.php?id=2702423
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